Docker file system not loading into localhost

Current I am working on a full stack application with a react frontend, mysql DB, and apache php instance. Something seems to be up with my changes going from my docker container to localhost. I can write from my local machine -> docker, but it seems like localhost is not reading react from my docker container.

I know that my mount is working correctly local machine -> docker file system because whenever I make changes in my IDE and save, then go and cat App.js within my docker container, that changes are there.

Any insight would be helpful, I think what is happening is that docker is taking a copy of the file upon creating the container, because whenever I remake the container, my changes to through to localhost.

p.s. I’m newish to docker, so let me know if you need more information. Thanks!

docker-compose

version: "3.7"

services:
  frontend:
    container_name: frontend
    build:
      context: "./hartley_react"
      dockerfile: Dockerfile
    volumes:
      - "./hartley_react:/app"
      - "/app/node_modules"
    ports:
      - 3000:3000
    stdin_open: true
    environment:
      - CHOKIDAR_USEPOLLING=true
    command: npm start

  php:
    container_name: php
    build:
      context: "./dockerfiles/php-img/"
    ports:
      - "80:80"
    volumes:
      - ./src:/var/www/html/

  db:
    container_name: db
    image: mysql
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: example
      MYSQL_DATABASE: userdb
      MYSQL_USER: my_user
      MYSQL_PASSWORD: my_password
    volumes:
      - ./mysqldata:/var/lib/mysql

  adminer:
    container_name: adminer
    depends_on:
      - db
    image: adminer
    restart: always
    ports:
      - 8080:8080

volumes:
  my-mysqldata:
  frontend:

React DockerFile

FROM node:17.4.0-alpine
WORKDIR /app
COPY package.json .
RUN npm install
COPY . ./
EXPOSE 3000
CMD [ "npm", "start" ]